2-hydroxy-3-(thiochroman-4-yl)-2-trifluoromethyl-propionaldehyde   、                                                                                      
2-甲基喹唑啉-5-胺                                                                                                                                                                                                                                                                                                          以to yield the corresponding 3-(thiochroman-4-yl)-1-[(2-methylquinazolin-5-yl)imino]-2-(trifluoromethyl)propan-2-ol的产率得到3-(thiochroman-4-yl)-1-[(2-methylquinazolin-5-yl)imino]-2-(trifluoro-methyl)-propan-2-ol